Question 5 - Figure it out - Page 143, 144 - Chapter 6 Class 7 - Number Play - Ganita Prakash

Transcript

Question 5 (a) Fill in the following blanks with ‘odd’ or ‘even’: (a) Sum of an odd number of even numbers is ______ Let’s do this with example Sum of 3 even numbers Even + Even + Even = Even + (Even + Even) = Even + Even = Even Thus, Sum of an odd number of even numbers is even Question 5 (b) Fill in the following blanks with ‘odd’ or ‘even’: (b) Sum of an even number of odd numbers is ______ Let’s do this with example Sum of 4 Odd numbers Odd + Odd + Odd + Odd = (Odd + Odd) + (Odd + Odd) = Even + Even = Even Thus, Sum of an even number of odd numbers is even Question 5 (c) Fill in the following blanks with ‘odd’ or ‘even’: (c) Sum of an even number of even numbers is ______ Let’s do this with example Sum of 4 even numbers Even + Even + Even + Even = (Even + Even) + (Even + Even) = Even + Even = Even Thus, Sum of an even number of even numbers is even Question 5 (d) Fill in the following blanks with ‘odd’ or ‘even’: (d) Sum of an odd number of odd numbers is ______ Let’s do this with example Sum of 3 Odd numbers Odd + Odd + Odd = Odd + (Odd + Odd) = Odd + Even = Odd Thus, Sum of an odd number of odd numbers is odd